# 赋值运算符 = 表示赋值  ==表示比较相等
# a = b = 20
# a , b = 10 , 20
a = 10
b = 20
# temp = a
# a = b
# b = temp
# print(a,b)
# 使用多元赋值
a,b = b,a
print(a,b)
